Hydraulic press for sound-records.



e. E. DAVENPORT. HYDRAULIC PRESS FOR SOUND RECORDS. APPLICATION FILEDAUG-11.1%?!

1,290,105. Patented Jan. 7,1919.-

4 SHEETS-SHEET I- GEORGE E .DavEN PoFaT G. E. DAVENPORT. HYDRAULIC PRESSFOR SOUND RECORDS.

APPLI CATION FILED mam. m2.

1,290,105 Patented Jan. 7,1919.

4 SHEETSSHEET 2'.

.G. E. DAVENPORT.

HYDRAULIC PRESS FOR SOUND RECORDS.

APPLICATION FILED AUG-H. 1912.

1,290,105. Patente Jan 7,1919.

4 SHEETSSHEET 3- G. E. DAVENPORT.

; HYDRAULIC PRESS FOR soumJ REcoabs.

' APPLICATION FILED Augm. 1917. 1 ,290,1-05. Patented Jan. 7,1919.

Hr 4 SHEETS-SHEET 4- l I] 1 4 Elm-mute;

4 135 GEORGE EDHVENPORT GEORGE E. DAVENPORT. 0F CAMDEN, NEW JERSEY.

HYDRAULIC PRESS FOR SOUND-RECORIQS.

rea ies.

Application filed august. 1L 191?.

character used for stamping the Hat record tablets or record disks usedin sound reproducing machines.

One object of this invention is to provide a machine of this characterwith a pivotally mounted huclchcad whichsnpports the upper matrix or dieand provide improved means for locking this buck-head in its lowered oroperative position.

A further object is to provide a construction of this character in whichthe bed of the press is provided with laterally disposed up standingmembers having outwardly projecting lugs at their upper ends, andprovide upon the buck-head sliding yokes having inwardly projecting lugsor detents which, when the yokes are shifted into one positiou, engagethe first named lugs to hold the, buck-head in its lowered position andwhich, when disengaged, permit the buckhead to be rotated upon its pivotto a raised position.

A further object is to provide a counterweight for raising! thebuck-head and to provide guides between i which the counterweight movesso that the counterweight will not accidentally injure an operatorstanding behind the press. lln other words, to provide means whereby thecounterweight will' n'otcetine the )(ISOII o eratinr the press 1 is A 1and furtiermore preventing: the hack-head from dropping down upon thelow'er die in case the belt which supports the. counterweight should byany chance break.

Still another object into provide at press Specification of Lettersiatent.

hydraulic presses, and particularlj to presses of that,'

of this character with title carrying month-ere or platens so arrangedor constructed that; hotfvvater or'stearn may be caused to circn latethrough the platens or coldwater may be caused to circulatetherethrongh, and in this connection to provide automatic means wherebywhen the huclohead is raised. and the hydraulic piston of the press islowered, steam or other heating fluid shall. he caused to circulatethrough the platens to th rehg heat the dies, and as soon as the lithepress is raised and the llr'lilidlbitl moored, the steam will be drivenout and cold water.

will be caused to circulate through tho ens to thereby cool the dies.

A further object is to provide improved means for controlling theadmission rm ter to the piston cylinder.

Other objects relate to improvements in the details of construction andarran 'e- :nent of parts as will appear more fully hereafter.

My invention is illustrated in the aceoin-v panying drawings, whereinFigure 1 is a front elevation of my line proved hydraulic press showingthe buckhcacl closed, a part of the piston block being broken away; i 1

Fig. 2 is a vertical sectional View from trout to rear;

Fig. 3is a fragmentary rear elevation of the upper portion of the press-Fig. 4- is a fragmentary sectional view on i the line -l-4 of Fig. 6;

Fig. 5 is a fragmentary vertical section through the center of'the upperplaten;

Fig. 6 is a transverse vertical section through the lower platen;

Fig. 7 is a fragmentary side elevation of the steam and watercontrolling valve;

Fig. 8 is a vertical sectional viewpthrough the valve casing forcontrolling the inlet of steam and hot water to the dies;

Fig. 9 is a detailed plan view partly in section showing av part. of thelatch open ating mechanism Fig. 10 is a fragmentary top plan view 05 thepiston, the uprightsheing in section:

11 is a sectional view of the manifold on the line 11-41 of Fig. 2; i

Fig. 12 is vertical sectional view through the manifold on the line12-1:2 of Fig. ll.

Referring to these drawing: it will be seen that the press comprises abase plate 10 having upwardly extending: flanges 11, this plate beingformed to support in- Patent-ed Stand "5, llilii h tit) strumentalitieswhich will be later de-- scribed. Mounted upon this plate, in anysuitable manner, is the base, designated generally 12, which isillustrated as approximately rectangular in cross section and with sidesextending upward and inward, these sides bein preferably cut-away so asto make the iase relatively light and permit access to the partsinclosed within the base. Mounted upon the base in any suitable mam nerand either bolted thereto or formed integral therewith, is the bed 13 ofthepress. This bed is relatively thick and solid and is formed with acentrally disposed cylinder 14 within which a piston 15 operates in theusual manner.

Extending upward from the bed on each side of the press are a pair ofuprights 16, the inner faces of which uprights extend vertically upward.The two uprights 16 disposed at the front of the press are formed withtransversely extending lugs 17, for a purpose which will be laterstated. The

outer faces of the uprights 16, which uprights constitute guides for thebuck-head and piston block, are inwardly beveled as at 18 and thenoutwardly extended to provide lugs 19, which project beyond the edgefaces of the uprights, the upper faces of -these lugs being rounded. Thebed is also formed with an outwardly projecting flange 20 at its front,the upper face of the flange l)\.' ing coincident with the upper face ofthe bed and this flange being perforated as at 21 for the passage oflimiting bolts 22, the purposeof which will be later described.

Extending rearward and upward from the bed are the arms 23, which attheir upper ends are transversely recessed for the purpose of supportingthe bearing blocks 24, which are provided with suitable ournal hearingsforthe extremities of a transverse shaft 25. The buck-head, wh ch isdesignated generally26, has 'a rearwardly and downwardly extending arm27, the shaft 25 constituting 'trunnions for said arm, resting in thebearings 24 and to the outer extremity of this arm 27, there is pivcallyattached a link 28 and pivoted to this link is a counterweight 29, theupper end of which is bifui'rcated for the passage of a bolt 30, whichconnects the link to the counterweight.

the link 28, which is held to the arm by the bolt 31. The side faces ofthe counterweight downward and inward, so that when the counterweight isin its extreme lowered po- The arm 27 is also bifurcated for thereception of the upper end of this rib and resting upon the upper fa eof the buck-head are the forward and rear yokesBG and 37. These yokesextend transversely of the machine and are bent over at their outerends, as at 38; and then bent inward as at 39, these inwardly extendingends forming lugs which are so shaped as to engage beneath and have snugengagement with the lugs 19, in the manner illustrated in Fig. 1. Theseyokesa're connected to each other-by a pair of longitudinally extendingbolts 40, ,each of these bolts being threaded in opposite directions,these threaded portions passing through the front and rear yokes andbeing provided on each threaded portion with the clamping nuts flushwith th forward face of the buck-head but extends rearward beyond therear. edge of the buck-head and over the arm 27.

For the purpose of longitudinally shift-- ing the yokes 36 and 37, Iprovide a bracket 42, which extends out from the front of the buck-headat the middle thereof and mount on this bracket an upwardly extendingoperating lever 43, which is connectedby links 44 to an ear 45projecting out from the yoke 36. It will be obvious now that by shiftingthe lever 43 in one direction or the other, the yokes will be shiftedfrom a position in engagement with the lugs 19 to a position out ofengagement, that is, to aposition be tween the uprights 16. The rib ispro vided with a stop 46. which limits the rearthcrmost positi m,-theywill be in staggered relation to the uprights 16' and, therefore, thebucloliead is entirely released from its engagement with these uprightsand the counterweight will act to draw the buckhcadup, When, however,the lever is thrown in a contrary position, the'yokcs will be drawn inalinement with the uprights 1(3 and the lugs 39 and 19 will beinterlocked with each other. 7

For the purpose of locking the b u-lchead in its raised position andpreventing any aicidental descent of the buck-head, due for instance tothe breaking of the pivot bolts which connert the counterweight to thebuck-head, I provide latches 47. There are on each side of the arm 27.these latches bemg each provided .with a rearwardly prothe arm 27 withthe link connected to the counterweight. The latches 47 are pivotallymounted upon a: bracket 49 projecting out from the base and are shown asbeing pivoted upon a bolt passing through the bracket and through thetwo latches. The two latches are connected at their lower ends by across bar 50 and this cross bar extends downward and forwardjn the formof a curved arm 51 and is pivotally connected to ears on a transversecross bar 52. Depending from the under face of the bed are guides 53,through which transverse rods 54 pass, these rods being connected to across 1 bar 52, in turn connected to the arin 51, and

" lower the buck-head under these circumprovided with a treadle plate.

pivotally supported upon a bracket 56 is a bell crank lever 57, theupper end of which has a cross bar which is connected to the two rods54., and the lower end of which is connected by a link 58 to a treadl'elever 59 pivoted at its rear end upon upstanding ears 60 and extendingout through an opening in the front wall of the base and Springs 61surround the rods 54 and bear against the guides 53 and thus urge thelatches -17 downward'and outward into the path of movement of the pivotpin 31, [which pivot pin or bolt extends out laterally beyond thecoacting ears on the arm 27. f

Now when the buck-head is raised, the connecting bolt or pin 31 movesdownward and sliding against thebeveled faces of .the

lugs 48 forces the latches inward until the pivot bolt 31 has passedbelow the lugs, whereupon the springs '61 force the latches outward.Now. if an attemptbe made to stances, the. pivot pin or bolt will bearagainst the detent lugs 48 and the buckhead cannot be lowered. Thus ifthe coun terweight is released from its engagement with the buck-head bythe breaking of bolts or pins, the buck-head cannot drop because of thelatches. If it'is desired to lower the buck-head it is only necessary todepress the treadle lever 59 and this withdraws the latches out of thepath of movement of the bolt, 21 and the buck-head may be lowered.Itwill be seen that when the buck-head is raised, these latches lockautomatically and that they are unlocked by the foot lever.

The piston 15 as illustrated in Fig. 2, is formed at its bottomwit-h a.circumferem tial groove or channel 62 and a metal plate' of the channel62. This channel is designed for the carriage of a piston ring. Theupper face of the piston has a pair of screwthreaded openings 63 bywhich the piston block 64 is held to the piston. This piston block Gl-is formed with an annular recess 65,'on its under face, within whichthe upper end of the piston is disposed. Mounted upon the piston block64: is the adjusting plate 66 perforated at its forward and rear endsfor the passage of the adjusting screws 67. The piston block and theadjusting plate are provided with a plurality of pas{ sages as will belater stated. The bed ot' the press is provided with an opening 68connected by a pipe 69 to a valve .which will be later described,whereby water may be al- I lowed to enter the cylinder to force thepiston up or be allowed to escape from the ryl inder to permit thedownward movement of the cylinder. The buck-head and thepiston blockboth carry platens '70 and 71 constructed as will be now described.

The lower platen 7 O is illustrated in detail in Fig. 6, and comprises abottom. plate 72 and a top plate 73. The top plate is formed with acentral screw-threaded hub 74 which screws into a central opening in theplate 72,

and this hub is bored entirely through the plate and the upper face ofthe plate is formed with a counterbore 7 5 wherein is disposed a plug 76having an overhung annular 'ange 77 and a central pin 78, which isrounded and forms the pin whereby the guide or matrix is centered onthis die plate or platen and whereby the upper die plate and die arecentered with relation to the approximately concentric grooves 82forming circulating coils arranged as illustrated in Fig. 4, the opensides of'these grooves being closed by the plates 72. Preferably thereare two series of these grooves, both merging into each other at thecenter of the disk and ending at diametrically opposite portions of theplaten.

- Adjacent the center of the platen there is a passage 83 with whichbrth series of grooves connect, this passage '88 being connected to anoutlet duct or pipe and at diametrically opposite portions of the platenand communicating each with one of the series of grooves-are inletpassages 84 and 85, each connected toga source of water and to a sourceof steam, the entrance of steam and 12s the entrance of water'beingcontrolled by a valve which will be later described. By this means,either steam may be allowed to travel through the concentric channels,or 'cold water may be allot led "to travel through the channels to thusintermittently heat the platen or chill it.

For the purpose of holding a die or matrix upon the upper face of theplate 73, I form upon the upper Iace of the plate an annular .recess 86,the innerwall of which is screwt-hreaded and I provide a ring 87, whichhas screw-threads to engage with the screwthreads ont-he inner wall ofthe recess, this ring being formed with an overhanging flange 88corresponding to the overhanging flange 77 on the plug 76 and the die ormatrix is disposed beneath this overhanging flange S8 and held in placeby the ring or by the plug. By removing the plug and.- by removing thering, the matrix may be readily removed. The ring is formed withopenings whereby a wrench may be applied thereto and is preferably heldfrom any unscrewing action by means of a set screw 89. v

The upper platen is constructed in the same manner as the lower platenexcept that a plug 76 is provided which extends entirely through theupper platen and has screw-threaded engagement therewith and is formedwith a central opening to receivethe pin 7 8 on the lower platen.

For the purpose of controlling the flow of steam and cold water to thedie plates, I provide the'stcam and water controlling valve (Fig. 8)which is designated generally 90 and is mounted upon one side of the bedof the press. The valve casing is constructed to provide two inletchambers 91 and 92, the chamber 91 being for the inlet of steam and thechamber 92 being for the inletof cold water and these chambers beingconnected by pipes 93 and '91 to suitable sources of steam and waterrespectively. Disposed in these chambers are the valves 95,

.0ne valve in each chamber, each valve being provided at its bottom witha. beveled flange or head 96, which engages with a shoulder 97 at theupper end of the corresponding chamber; this shoulder form-- ing a seat.The bodies of the valves are formed with ribs 98 whereby the valves arecentered properly within the chambers. Each valve is provided with anupwardly extending stem 99, which passcs upward through the valve bodyand through. a stuffing box 100 in the upper cud-of the valve bod Disposed above the chambers 91 and 92 are thc outlet chambers 101 and102. These chambers both connect to a-manit'old 103,

this manifold being connected by pipes 104' and 105 to the inletopenings 81 and 85 ot' the platens. Thus. steam may pass to both of saidinlet openings or cold watcr may pass to both of said inlet openings.depending upon the positions of the valves 9.) within the rcspcctivcchambcrs 91 and 91b The pan ticular construction of this manifold andits connections will bc later described. Ex-

tending downward from the" chambers 91 and 92 arc'the bonncts or hoods106, which are provided with stuffing boxes at their. lower ends and areintcriorly screw-threaded at their lower ends and in the lower end ofeach hood there is disposed an adjusting screw 10?, which has swiveledengagement with n plunger 108 and disposed within each chamber 91 and9;! is a cap 109 having an upwardly projecting boss which bears againstthe under face of the corresponding valve 95. this cup fitting over acoiled compression spring 110 which is disposcd within the cap and theplunger 108. it will thus be seen that the springs hold the valves totheir respective seats or urge them toward these seats and that thepressure ot' the springs may be adjusted. The adjusting screw 10? isheld in its adjusted position by means of the jam nut 111.

The side of the valve casing 90 is provided with a bracket 112 wherebyit may be.

attached to the bed of the press and the upper end of the valve casingis provided with an upwardly projecting pedestal 113. A rocker arm 114having oppositely disposed parallel legs is rotatably mounted upon this.the pedestal and that therefore when the rocker arm 11-1 is in oncposition, one valve 9h will be depressed while the other will be raisedand vice versa. The inner end of the rocker arm is pivolally connectedby means of a bolt 119 to the piston block, as illustrated in Fig. l.Globe valves 120 are provided for primarily controlling the passage ofwater or steam to the respective valve chambers and when thc nmchinc isentirely outof operation. these globe valves are turned to cut oh thesupply of steam.

Normally. and when the piston' block 1 is in its lowcrcd position.communication will be cslublishtd bctwccn the steam inlct cbambcr 91 andthe platens on the buck-head and on the piston block, so that both ofsaid platens and the dies attached thcrcto will'bc reeonoe tor will hecut The piston block is proa Li ' with.

vided -with limiting bolts 22 which are attaehed to the piston block andpass through the passages 21, these bolts being provided at their lowerends with heads, which constitute stops limiting the too great upwardmovement of the piston and preventing; the

detachment of the piston block and piston from the cylinder. By removingthese heads, of course, the piston block and piston may be removed. v

By reference to Fig. 6, it will be seen that the outlet. passages 84 and85 of each platen are screw-threaded and that pipes 1:22 are connectedto these screw-threaded openings, these pipes extending outward to asuitable header, or manifold, this header being connected ,hy flexiblepipes to the steam water inlets If do not wish to limit myself, however,to any particular arrangement of the headers and pipes connecting thevalves to the platens. Each of the platens has a central water passage83, which connects to an outlet pipe wherehy the cold water or theexhaust steam may be withdrawn whenever desir The admission of water tothe cylinder oelow the piston is controlled by means the double valve124 which may he of any or us ll construction so that when "e is shiftedin one direction, the wel ie'cnt. oil but allowed to pass again when thevalve is shifted in the opposite direction.

llhe manifold designated 103 generally is 'illustratr-zd in Fig, 3, andthis manifold is supported by a bracket at the hack of the press Theborlv of the manifold is vltormetl with a water inlet 125 and a steaminlet 121) disposed at the same level. From the water inletilfiliextends a passage 127, which opens into transverse passage 128,which at its ends ogsens into superimprsed valve chainhers 12%), inwhich are disposed the check valves 130. From these valve chamberse7ttend the outlet passages 31. The steam inet is provided with apassage 132 extending ly in the passage 12? and opening "into thetransverse passage 183 extending henesth the valve chambers 7.34, inwhich are disprr ch 'a lves These valve chain. s lS l municate bypassage we chambers Ln each of the outlet passages w mean coni'iection lwl'dvh "hle pipes it dead extend to the Now it will be tones, water isto flow through the controlling valve, the water will enter the .inl125, thence pass into the E28 and hit the check valves 1%. 'lhis'willnot only till the passages 136 but it will force down the check valves135 and therefore the water will flow out thror'igh the Siameseconnections to the upper and lower platens. When, however, thecontrolling valve is shifted so as to permit steam to enter, the steamwill enter the Water pipe while water is passing,

through the check valves 129 and check valves 134 are provided for thepurpose of preventing the water from backing up by way of the steampipes.

The operation of this invention will be readily understood from. whathas gone be fore. Normally of course the valves 120 are closed but whenit is desired to operate the press, the proper dies are disposed uponthe platens and held in position thereon by screwing down the rings 87and the plugs 76 and 76, Theme tablet of the composition ordinarily usedin forming phonographic tablets is placed between the (lies and thehuckhead is drawn downward by hand against the force of thecounterweight and locked by shifting" the lever 43 as heretoforedescribed. Water is then admitted beneath the piston in the usual mannerandthe piston rises and as it does so the steam which has beencirculating through the platens is cut off and cold water is allowed toflow through the platens, thus chilling the dies. After a suitableinterval, the foot lever 59 is depressed, thus releasingthe latches i?and then by shifting thelever 43 rearward the locking yolres are carriedinto a position beneath the standards and the counterweight causes thebuck-head to rise to its normal pohead and for the piston block that thebuck-head and the upper platen and the piston block and the lower platenare held in proper registering relation with each other, sothat aperfect concentricit v of the record on both sides of the 1 the pistonto shift laterally as it, and cmert s more and more from the cylinder.As before stated, it is impossible for the hurls-head to lull aethere isno terniencjl; oi

cidcntally and because of the fact thatthe co-unterweig l unified.Vlou'nward and inward, there is no chance oi an operator get tin caughtbetween the descending and rel ut-iveiy heavy couuterweig'ht and thefloor which would he the case did an counterblot is secured and weightdepend by gravity from the arm 27. In this case, the counterweight wouldfall directly downward and outward of the base. These machines in actualuse are placed relatively close together, one behind the other ofcourse, just suflicient to permit a certain turning movement of theyokes as the buckhead rises. These uprights are about 4" wide while thespaces between the uprights are approximately (3 wide. It will furtherbe noted that control of the cold water and steam is not left to theoperator who might otherwise keep the steam on too longer keep the coldwater on too long, but that the steam is cut off exactly at the samepoint under all circumstances and the cold water allowed to flow for thesame period under all circumstances. This period, during which the coldwater and steam may be allowed to flow, maybe readily adjusted byadjusting the point of pivotal connection of the arm 114 to the pistonblock or by adjusting the screws 117. Thus the screws may be so turnedthat they will not engage with the outer ends of the valve rods or stemsuntilafter the rocker arm 114i is moved a certain predetermined distanceor they may be engaged immediately and these screws may further belocated so as .to tak up any lost motion.

Preferably, as will benoted from Fig. '10,

. the upper faces of the piston block is armed with a gutter 137 whichacts as an overflow gutter and has a channel leading oil to the sideface of the piston block. While I have illustrated a particular form ofmy construction and the particular arrangement of the various parts, itmay be understood that various modifications may be made both in theconstruction and operation, without departing from the spirit of theinvention.

Having described my invention, what I claim is:-

1. A press including a base open at its rear end, a bed mounted' uponthe base, a buck-head pivotally mounted upon the bed, a counterweightoperatively connected to the buck-head to raise. it, and means forguiding the counterweight downward and inward through the opening in therear of the base as the counterweight is lowered.

2. A press including a bed, means for supporting the bed, a buck-headpivotally mounted upon the bed, a counterweight operatively connected tothe buck-head to raise or lower it, and means for guiding saidcminterweight downward into a position entirely beneath the bed when thecounterweight 'is lowered.

3. A press including a base open at its rear end, a bed mounted thereon,a buckhead pivotally mounted upon the bed and having a rearwardextension, downwardly and inwardly inclined guides mounted upon thebase, extending upward and through the rear end of the base, and acounterweight operatively connected tothe extension of the buck-headaudslidably engaging said guides, said guides carrying thecounterweights downward within the base of the press. when thecounterweight is lowered.

i. A hydraulic press including upper and lower platens one movabletoward and From the other, each of said platens being providcd withchannels, means for directing alternately a heating or a cooling mediuminto said channels. comprising a pair of valves one controlling theoutlet of heating medium and the other the outlet of cooling medium, anda valve actuating device ope-ratively engaging said valves andalternately shitting them to open position,

said actuating device being operatively connected to one of said platensto move therewith. l

5. A press including a lower outwardly movable platen and anupperdownwardly movable platen, both of said platens being provided withchannels, and means for directing a heating medium or a cooling mediuminto the channels of the platens, comprising valve chambers, oneconnected to a source of water and the otherto a source of steam, therebeing outlet passages leading from said valve chambers and opera tivelyconnected to both of said platens, an actuating lever pivotally mountedbetween the two valves and operatively engaging the valves, saidactuating lever being pivotally connected to the lower platen.

(LA press including a lower platen and an upper platen movable toward orfrom each other, a piston operatively engaging the lower platen to liftit, said platens being formed with channels, and automatically actingmeans for directing cold water into the platens upon the upward movementof the'piston andthe'platen connected thereto nd directing steam intothe platens upon a downward movement of the piston and the platenconnected thereto.

7. In a press of the character described,

the combination With platens moi'able toward or from each other, anddies carried by said platens, one of said dies having fluid passagesthrough it, of means for controlling the passage of fluid through, thedie including a header operatively connected to the die and having a'pair of inwardly opening inlet valves, closing upon pressure within theheader, a steam inletpipe connected to the header behind one of saidvalves. a water inlet pipe connected to the header behind the other ofsaid valves, and

by said platens, one of said dies having fluid passages through it, ofmeans for controlling the passage f fluid through the die including aheader having'inlet openings at its opposite ends, valve chambersextending downward from said inlet openings, upwardly opening valvesdisposed in said chambers, a steam chamber opening into one of saidvalve. chambers beneath/the valve. a water chamber opening into theother. of said 'valve chambers beneath the valve, connections extendingfrom said water and steam sources respectively, and means controlled byone of said movable platens for cutting oflthe supply of water to theheader and admitting steam or cutting off the supply of steam andadmitting'water.

9. In a press of the character described, the combination with platensmovable toward or from each other, and dies carried by said platens, oneof said dies having fluid passages through it, of means for controllingthepassage of fluid through the die including a pair of headersextending parallel to each other and having outlet pipes, a pair ofvalve chambers extending down- .ward from each header and, having up-\vardly opening valves therein, a chamber disposed below the pair ofheaders and connecti'ng the two valve chambers at one end of theheaders, a chamber extending below the opposite ends of the headers andconnecting the valve chambers at that end, means for supplying water toone f said chambers and Steam to the other-of said connecting chambers,and means controlled by the'movement of one of said platens forintermittently supplying water to the header and. cutting off the supplyof steam thereto or supplying steam thereto and cutting otl the supplyof water.

10, In a press of the character described, opposed platens movabletoward or from each other, a dieJnovable with one of said platens andhaving fluid circulating passages therein, and means for controlling thecirculation of fluid through the die comprising a valve casing havingtwo chambers,

each operatively connected to the die, valve ehambers extending downwardfrom the first named chambers and connected one to a source of water andanother to a source of steam, downwardly opening .valves in saidchambers having stems extending upward through the valve casing,springsurging said valves to a closed position, and a lever pivotedintermediate its ends and having operative"connectiou to one 'of saidplatens to move therewith, and members adjustably mounted upon the leverto engage with the valve stemsas the lever is 08011- lated to therebydepress ne or the other of the valves.

In testimony whereof I hereunto atlix my signature in the presence oftwo witnesses. GEORGE E. DAVENPORT. Witnesssi I-IA'rrm SATINSKY, PATRICKH. HARmNo.

